Lock status failing to update in Home Assistant

[thisistotallyshaun]

I have two Eufy locks (a T8520 and a T8520N) which have both worked fine with Home Assistant for about two years, but the T8520N is suddenly not reflecting its lock status in Home Assistant.

i.e. if you unlock or lock it via fingerprint, code, manually, or via the Eufy app, Home Assistant will have no idea it's happened. So it will think it's unlocked when it's locked, or vice versa.

I imagine it's related to this in the logs. How do I fix it?

2026-02-04 04:10:19.044	INFO	eufy-security-ws:eufy-security-client	[main] MQTT connection successfully established
2026-02-04 04:10:19.285	ERROR	eufy-security-ws:eufy-security-client	[mqtt] Subscribe error for lock [T8520N serial] {
  error: 
   {
     cause: undefined,
     message: 'ErrorWithSubackPacket: Subscribe error: Unspecified error',
     context: undefined,
     stacktrace: 'ErrorWithSubackPacket: Subscribe error: Unspecified error\n    at cb (/usr/src/app/node_modules/mqtt/build/lib/client.js:564:36)\n    at handleAck (/usr/src/app/node_modules/mqtt/build/lib/handlers/ack.js:113:13)\n    at handle (/usr/src/app/node_modules/mqtt/build/lib/handlers/index.js:36:31)\n    at work (/usr/src/app/node_modules/mqtt/build/lib/client.js:267:40)\n    at writable._write (/usr/src/app/node_modules/mqtt/build/lib/client.js:292:13)\n    at writeOrBuffer (/usr/src/app/node_modules/readable-stream/lib/internal/streams/writable.js:336:12)\n    at _write (/usr/src/app/node_modules/readable-stream/lib/internal/streams/writable.js:285:10)\n    at Writable.write (/usr/src/app/node_modules/readable-stream/lib/internal/streams/writable.js:288:10)\n    at TLSSocket.ondata (node:internal/streams/readable:1007:22)\n    at TLSSocket.emit (node:events:519:28)' 
   },
  deviceSN: '[T8520N serial]' 
}
2026-02-04 04:10:19.293	INFO	eufy-security-ws:eufy-security-client	[mqtt] Successfully registered to MQTT notifications for lock [T8520N serial]
2026-02-04 04:10:19.300	INFO	eufy-security-ws:eufy-security-client	[mqtt] Successfully registered to MQTT notifications for lock [T8520 serial]

[thisistotallyshaun]

I found a fix:

Devices were shared with the account Home Assistant was using via "Share Home" in the Eufy app. I stopped the sharing via Share Home and shared specifically through Share Device for each one instead and that fixed it. Not sure why Home worked for one device and not the other but it seems to work now so I'm not going to question it.